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Q. Explain data aggregatio n and discuss different design constraints. Sol. Aggregation One limitation of the E-R model is that it cannot express relationships amon
What is first normal form? The domain of attribute must contain only atomic (simple, indivisible) values.
1 - Serial RS232 comm port comunication 2 - NanoHTTPD serving a few processed pages 3 - System tray application to indicate status and access configuration forms 4 - SQLit
Using the concepts defined previous, we have identified that strong entities in COLLEGE database are FACULTY, STUDENT, COURSE and DEPARTMENT. This database also has one weak entity
Scenario: You are a freelance database designer who has just been contacted by a small software development company named Altair Software. The president of the company has asked
DISADVANTAGES OF RDBMS
In an E-R diagram an entity set is represent by? In an E-R digram entity set is represted by rectangle.
Database Administrator One of the main perpose for having the database management system is to have control of both data or programs accessing that data. The person having li
Question 1 Indexes are ocasionally defines on a single field of a file called an indexing field. List and describe the different types of indexes Question 2 Consider a book i
Give an example of Object Representation For illustration, consider the implementation of a social security number within an employee object that is shown in Figure. The soci
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